package com.foo.ui_demo_widget;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.recyclerview.widget.StaggeredGridLayoutManager;

import android.os.Bundle;

import com.foo.ui_demo_widget.adapter.MyRecyclerViewAdapter;

import java.util.ArrayList;
import java.util.List;

public class RecyclerViewActivity extends AppCompatActivity {
    private List<String> data;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_recycler_view);

        initData();
        RecyclerView rvDemo = findViewById(R.id.rv_demo);

        // LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        // layoutManager.setOrientation(RecyclerView.HORIZONTAL);
        // GridLayoutManager layoutManager = new GridLayoutManager(this,4);
        // layoutManager.setOrientation(RecyclerView.HORIZONTAL);
        StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(3,
                StaggeredGridLayoutManager.HORIZONTAL);

        rvDemo.setLayoutManager(layoutManager);

        rvDemo.setAdapter(new MyRecyclerViewAdapter(this,data));
    }

    private  void initData(){
        data = new ArrayList<String>();
        for(int i='A';i<='z';i++){
            data.add("" + (char)i);
        }
    }
}